As promised, Salman Khan unveiled the trailer of his much-awaited film Jai Ho at Mumbai's Chandan cinema on Thursday in the presence of media and his fans.Salman, who has a mass fan following, was in his element, surrounded by his fans, who were whistling and clapping at each shot of him during the trailer."If you liked the trailer, please stay here and if you didn't like it please move out," he said.Asked why was the title changed from Mental to Jai Ho, he said: "Mental was a working title and if at all we had gone ahead with Mental, maybe people would have started calling us as Mental Khan... I don't have a problem but other Khans may not like it. Besides my father didn't like the title Mental and we must listen to our father... Jai Ho was also suggested by my father."Directed by Sohail Khan, Jai Ho features Tabu among others.